Outland
Outland is a PvE game mode available at team level 25. You can find it on the main game screen.
In Outland, you have to face three different bosses. Each of them is immune to specific attacks, so only certain heroes can fight them. The bosses are also immune to specific skills and control effects.
Vadjar is immune to magic and ranged attacks. Vadjar can't be stunned, and the duration of the blindness applied to the boss is halved.
Vadjar is immune to:
Chabba's Wild Hunger,
K'arkh's Nexus of Horror,
Ziri's Fury of Akhreb Ummi.
Brog is immune to physical attacks. The boss can't be stunned, silenced, and slowed, but you can blind him.
Brog is immune to:
Kai's Fetters of the Wind,
Lars' Lord of the Storm,
Phobos' Paralysis,
Lian's Enchantment.
While running, Brog doesn't get damage from Krista's Frozen Needles.
Brog is immune to physical attacks, while Astaroth deals only damage of this type. Thus, Astaroth can serve as a tank and support against Brog.
Ilyssa is immune to magic and melee attacks. You can stun the boss, but this effect's duration is halved.
Ilyssa is immune to Dark Star's Control.
You can also learn more about bosses immunity in this video.
Battle attempts are unlimited. Star rating does not affect anything; it only shows how well your team fought against the boss.
Every victory increases the boss's level, difficulty, and daily reward. The maximum boss level is 160.
If you defeat all bosses at their maximum level, you will unlock a unique avatar frame.
For the first victory over each level boss, you receive a one-time reward of Outland Coins, Skin Stones, and emeralds. There is also another reward for each victory: Outland Coins and the ability to open one Outland Chest for free. What is more, you can collect this reward daily without fighting the boss.
Outland Chest drops either a certain number of Skin Stones or Outland Coins. After you spend your free attempt, you can open another Chest for emeralds. With each opening, the reward slightly increases, up to 600 Outland Coins or 150 Skin Stones. You receive an additional Skin Stones bonus for every three opened Chests.
